This consolidated appeal arises from a dispute over the improvement of a one-lane dirt road which lies along the bank of the Allegheny River near Tionesta in Forest County, Pennsylvania. We affirm in part and reverse in part.
On appeal, Bruce Taylor (hereafter “Taylor”) alleges the lower court erred in granting summary judgment in favor of Robert Carringer et al., (hereafter “Carringer”), because Carringer failed to state a cause of action, material issues of fact remain unresolved and entry of summary judgment violated the Nanty-Glo Rule.1 Taylor also contends the dismissal of his separate action at law for quiet title based on easement theories was improper. Finally, Taylor asserts that the lower court abused its discretion by refusing to permit amendment of his counterclaim to include easement theories. In addition to the issues raised by Taylor, Car-ringer questions whether the lower court erred by modifying its order dismissing the quiet title action to read dismissed “without prejudice”.
The record reveals that Carringer and Taylor own property situated along the course of the one-lane dirt road. Taylor owns the property at the end of the road, and Carringer’s property abuts Taylor’s. In the summer of 1987, Taylor purchased the farm and lodge building at the road’s end. The road in question is the sole means of access to the parties’ properties. For years, the owners of the many small cottages along the road jointly maintained its surface. However, after purchasing the lodge property, *201Taylor began to make improvements and widen the road without the consent of the other abutting landowners.
On November 17, 1988, Carringer instituted ¿n action in equity for a preliminary injunction, alleging that Taylor was causing immediate and irreparable loss and damage to Carringer’s property by the unilateral widening of the unimproved dirt road. On November 22, 1988, a preliminary injunction was issued which prohibited all further road construction efforts by Taylor.2 Rather than file preliminary objections, Taylor filed an answer and counterclaim on February 28, 1989. Taylor’s counterclaim alleged that the road was a “privatized” public road with a statutory width of twenty-five feet within which he had a right to make repairs.3 In the alternative, he argued the road remained a public road which, pursuant to 36 Pa.S.A. § 1901, has a statutory width of no less than thirty-three feet.
Carringer moved for summary judgment. In granting partial summary judgment against Taylor, the chancellor found as a matter of law that Taylor’s counterclaim must fail because “there is no finding in the records of any court decree ... either opening or ... abandoning the road in question.” (Adjudication for decree nisi, p. 8). Since the court found the road had always been a private road, a decree nisi was entered on May 19, 1989, granting Carring*202er partial summary judgment and compelling defendant to “cease and desist from any further disturbance of the roadway.” (decree nisi of May 19, 1989).4 Both parties filed exceptions to the decree nisi.
On June 5, 1989, with exceptions to the decree nisi pending, Taylor instituted a separate quiet title action at law, asserting a “right of way or easement [by necessity or prescription] along said roadway with all attending reasonable rights of repair and maintenance.” (Complaint of June 5, 1989 at p. 2, 13). Thereafter, on July 12, 1989, Taylor moved for leave to amend his counterclaim in equity to incorporate the substance and allegations set forth in the new action at law. Similarly, Taylor petitioned for consolidation of the actions at law and in equity. In response, Carringer filed preliminary objections to the action at law alleging, inter alia, that dismissal was proper for failure to comply with the compulsory joinder provisions of Pa.R. Civ.P. 1020(d)(1) & (4).5 Carringer further alleged that the doctrine of lis pendens precluded the granting of Taylor’s request. In addition, Carringer filed a motion for allowance for attorney’s fees under 42 Pa.C.S.A. § 2503, alleging that Taylor’s actions were vexatious and his complaint at law was brought in bad faith.
Argument was held on the exceptions to the decree nisi and the preliminary objections to the quiet title action. Thereafter, Judge Wolfe entered a final decree, denying *203Taylor’s exceptions and granting Carringer’s exceptions to the decree nisi by adding language to clarify the scope of the injunction. In addition, Judge Wolfe denied Taylor’s motion to amend his counterclaim with easement theories. While recognizing that “easement rights may be afoot,” Judge Wolfe, nevertheless, found the motion “untimely,” since Taylor failed to raise the issue definitively prior to entry of the decree nisi. (Adjudication of August 22, 1989 at 5).
In an order filed the same day as the final decree, Judge Wolfe dismissed Taylor’s quiet title action and denied his petition for consolidation. The order also granted attorney’s fees to Carringer. Judge Wolfe reasoned that Pa.R. C.P. 1020(d)(1) & (4) precluded Taylor’s requests. In addition, Judge Wolfe believed that Taylor’s quiet title action and motion to amend were untimely because he was already entertaining exceptions to the decree nisi prior to filing of those documents. (Opinion of August 22, 1989, p. 3). With respect to attorney’s fees, Judge Wolfe held Taylor chargeable with the rules of procedure and described Taylor as taking “gross liberty” with the rules at Carringer’s expense.
Taylor then filed an appeal from both the final decree and the order. He also filed a motion for reconsideration of the dismissal order pursuant to Pa.R.A.P. 1701(b)(3). Upon reconsideration, the trial court amended the order to provide that the complaint was “dismissed without prejudice.” Both parties then filed timely appeals from the opinion of September 20,1989, which amended the order of August 22, 1989. The various appeals were consolidated and are now before this court.
We will first address Taylor’s assertion that the trial court erred when it entered summary judgment in favor of Carringer. Pennsylvania law is well settled that summary judgment is proper only in cases that are clear and free from doubt. Pa.R.C.P. 1035; Consumer Party of Pa. v. Comm., 510 Pa. 158, 173, 507 A.2d 323, 331 (1986); Mancia v. Comm., Dept. of Transp., 102 Pa.Cmwlth. 279, 282, 517 *204A.2d 1381, 1383 (1986); Huffman v. Aetna Life and Cas. Co., 337 Pa.Super. 274, 276, 486 A.2d 1330, 1331 (1984). Thus, our function in reviewing an order granting summary judgment is to determine whether any genuine issue of material fact remain, and, if no issues of fact remain, whether the movant is entitled to judgment as a matter of law. Mancia, 517 A.2d at 1383; Huffman, 486 A.2d at 1331; Rybas v. Wapner, 311 Pa.Super. 50, 53-56, 457 A.2d 108, 109-110 (1983). In passing upon a motion for summary judgment, we must examine the evidence in a light most favorable to the non-moving party. Melmed v. Motts, 341 Pa.Super. 427, 429, 491 A.2d 892, 893 (1985); Raffensberger v. Moran, 336 Pa.Super. 97, 101, 485 A.2d 447, 450 (1984).
In this case, we must review the grant of a summary judgment when the requested relief is an injunction restraining an invasion of real property, and we are guided by the following:
... A court of equity will only grant an injunction where the rights and equity of the plaintiff are clear and free from doubt and the harm sought to be remedied is great and irreparable. (Citations omitted). A party seeking to enjoin an invasion of his or her right in and to real property must demonstrate that he or she has a clear right to the property in question. (Citations omitted). To meet this burden, the plaintiff must rely upon the strength of his or her own title or other legal right to the property, and not upon the weakness of the title or legal right asserted by the defendants. (Citations omitted).
Cannon Bros., Inc. v. D'Agostino, 356 Pa.Super. 286, 290-91, 514 A.2d 614, 617 (1986).
Applying the aforementioned standards, we find that Taylor’s attack on the entry of summary judgment against him must fail. Taylor failed to produce any evidence which demonstrated that the road in question was ever a public road. In fact, the evidence of record indicates that the road has always been a private road. Since Taylor based his counterclaims on the premise that the road was at one time or is now a public road, there is no question that *205he has no right to “improve” the road based on such a theory. On the other hand, Carringer’s right to injunction is clear. The record reveals that Taylor’s actions have resulted in damage to the private property of Carringer, land which Taylor has no right to alter based on the theories which he raised in a timely manner. Accordingly, we affirm entry of summary judgment in favor of Carringer.
Next, Taylor questions whether it was error for the lower court to dismiss his separate action at law for quiet title based on easement theories. Again, we affirm the decision of the court below. Taylor argues that the lower court erred when it applied Pa.R.C.P. 1020(d)(1) and (4) to the present facts in that Rule 1020 does not apply to counterclaims. For the following reasons, we must disagree.
Pennsylvania Rules of Civil Procedure, Rule 1020, in pertinent part, states:
(d)(1) If a transaction or occurrence gives rise to more than one cause of action against the same person, including causes of action in the alternative, they shall be joined in separate counts in the action against any such person.
* * * * * *
(d)(4) Failure to join a cause of action as required by subdivision (d)(1) of this Rule shall be deemed to be a waiver of that cause of action as against all parties to the action.
Taylor argues that counterclaims are governed by Rule 1031 and Rule 1510, which provide that counterclaims are permissive, not mandatory, in Pennsylvania, and, thus, it was error to dismiss his separate action at law. See Davis Cookie Co., Inc. v. Wasley, 389 Pa.Super. 112, 566 A.2d 870 (1989) (counterclaims are permissive, not mandatory); Bender Floor Covering Co. v. Gardner, 387 Pa.Super. 531, 564 A.2d 518 (1989); Jackson v. Richards 5 & 10, Inc., 289 Pa.Super. 445, 433 A.2d 888 (1981); Oak Lane Shopping Center, Inc. v. Flame, 264 Pa.Super. 9, 398 A.2d 721 (1979).
*206However, the facts of the case before us differ from the permissive counterclaim cases cited by Taylor in one controlling aspect. Herein, Taylor had filed counterclaims prior to filing his separate action. In so doing, Taylor had become a “plaintiff,” and, as such, must follow the rules of pleading which control a plaintiffs complaint. Olivieri v. Olivieri, 242 Pa.Super. 457, 364 A.2d 361 (1976). Consequently, Rule 1020(d) applies in this particular case. Taylor’s failure to plead his cause of action in quiet title based on easement theories as a separate count in his complaint (counterclaim) operates as a waiver of that cause of action, and the lower court properly dismissed the separate action at law. See Garcia v. Community Legal Services Corp., 362 Pa.Super. 484, 524 A.2d 980 (1987), appeal denied 517 Pa. 623, 538 A.2d 876 (1988). In sum, counterclaims are permissive in Pennsylvania; however, once the defendant asserts a counterclaim, he becomes a plaintiff and must join all counterclaims which arise from the same “transaction or occurrence” upon which the counterclaim is based or such claims shall be deemed waived.
Taylor also complains that the trial court erred when it denied his petition to permit amendment of his counterclaim to include his easement theories. Again, we find no error on the part of the trial court. Instantly, Taylor did not seek to amend his complaint until after entry of the decree nisi which granted summary judgment in favor of his opponent. Generally, a party may at any time, either with the consent of his opponent or by leave of court, amend his pleading. See Pa.R.C.P. 1033. Permission to allow amendment is within the sound discretion of the trial court and will not be disturbed on appeal absent an abuse of discretion. Ecksel v. Orleans Const. Co., 360 Pa.Super. 119, 519 A.2d 1021 (1987); Gallo v. Yamaha Motor Corp. U.S.A., 335 Pa.Super. 311, 484 A.2d 148 (1984). Such a motion may be granted while a motion for judgment on the pleadings is pending, after judgment, or after an award has been made or an appeal has been filed. Ecksel, 519 A.2d at 1027. However, amendment must not be for a new cause *207of action or surprise or prejudice the opposing party. Ecksel, 519 A.2d at 1027; Robinson Protective Alarm Co. v. Bolger & Picker, 337 Pa.Super. 503, 487 A.2d 373 (1985). Applying the foregoing, we find no abuse of discretion in denying Taylor’s motion to amend which was not filed until after entry of the decree nisi. C.f., Small v. Columbia Gas of Pennsylvania, Inc., 363 Pa.Super. 61, 525 A.2d 424 (1987) (denial of losing party’s motion to amend which was filed after verdict and after post-verdict motions were pending was proper); see also Newcomer v. Civil Service Com’n of Fairchance Borough, 100 Pa.Cmwlth. 559, 515 A.2d 108 (1986).
In regard to Carringer’s contention that the trial court erred when it amended its order dismissing Taylor’s easement action to read “dismissed without prejudice”, we agree with Carringer. By failing to assert in his easement cause of action as a counterclaim along with his statutory theories, Taylor has waived that cause of action. Pa.R.C.P. 1020(d)(4). Taylor should have brought all of his causes of action at the same time, and entry of judgment against Taylor on his statutory causes of action has the effect of res judicata and bars recovery on his easement theories. Cf., Spinelli v. Maxwell, 430 Pa. 478, 243 A.2d 425 (1968). Thus, we reverse the amended order and remand for entry of an order which dismisses Taylor’s complaint at law “with prejudice.” 6
Final decree affirmed. Order of September 20, 1989, is reversed and case is remanded for entry of an order in accordance with the provisions of this opinion.
CIRILLO, President Judge, files a concurring and dissenting opinion.. Nanty-Glo v. American Surety Co., 309 Pa. 236, 163 A. 523 (1932) is inapposite presently. Nanty-Glo provides that summary judgment may not rest upon the oral testimony of a witness, since credibility may be impeached before the finder of fact. Instantly, however, entry of summary judgment did not rest solely upon oral testimony of witness. Rather, it was based on admissions by Taylor as to widening of the private road and Taylor’s failure to present any evidence that demonstrated the road in question was ever a public road.
. We note that several neighboring landowners intervened as co-plaintiffs.
. Appellant based this part of his counterclaim on the following statutory provisions, 36 Pa.S.A. § 2781, which reads:
Retention of vacated road as private road
Whenever viewers ... shall find and report that there is no necessity for such public road, but shall recommend in their report that the route thereof, or any portion thereof, be and remain a private road, upon approval of their said report ... shall be and become a private road, of the width of twenty-five feet, ... to be maintained and used as private roads are now maintained and used under existing laws,
and 36 Pa.S.A. § 2735, which reads:
Repair of private roads
All private roads should be opened, fenced and kept in repair by and at the expense of the person or persons respectively at whose request the same were granted and laid out, and by their heirs and assigns.
. In his adjudication for the decree nisi, Judge Robert L. Wolfe stated:
"We make no findings concerning Defendant’s right of use of the roadway as a matter of easement by necessity as that issue is not before us. Likewise, we make no determination of any alleged damages as that issue clearly raises a question of fact____” (Adjudication of decree nisi, p. 9).
. Pa.R.Civ.P. 1020, in pertinent part, states:
(d)(1) If a transaction or occurrence gives rise to more than one cause of action against the same person, including causes of action in the alternative, they shall be joined in separate counts in the action against any such person.
******
(d)(4) Failure to join a cause of action as required by subdivision (d)(1) of this rule shall be deemed a waiver of that cause of action against all parties to the action.
. Perhaps, Taylor should seek his relief via a Board of Viewers’ proceeding to open a private road pursuant to 36 P.S. § 2731, although we do not herein comment upon the merits of such an action.